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1.
When installing the product with the coil set sideways, make sure that the differential pressure (the
min. differential pressure to operate the valve) between the inlet and outlet is 0.03 MPa or more (see
Table 1 on Page 1).
* Failure to follow this notice may result in an abnormal operation.
2.
Though the product can be installed at any angle between vertical and horizontal, it cannot be
installed upside-down (see Table 1 on Page 1).
* Failure to follow this notice may result in an abnormal operation.
3.
Before connecting piping to the product, remove foreign substances and dirt inside the piping.
* Failure to follow this notice may prevent the product from functioning properly.
4.
When installation, check the direction of the product so that the fluid flowing and the arrow marked
on the product are in the same direction.
* Failure to follow this notice may prevent the product from functioning properly (the valve cannot
close).
5.
Make sure to connect a strainer (80–100 mesh) to the inlet of the product.
* Failure to follow this notice may prevent the product from functioning properly.
6.
Do not apply excessive load, torque or vibration to the product.
* Failure to follow this notice may result in drastically shortened service life.
7.
Secure enough space required for disassembly or removal of the product at maintenance or
inspections.
* Failure to follow this notice prevents maintenance and inspections being implemented.
Minimum space for disassembly or removal
Model: DP-100, DP-100F
Nominal size
10-25A
32-65A
Model: DP-100-D, DP-100F-D
Nominal size
10-25A
32-65A
Model: DP-100-C, DP-100F-C
Nominal size
10-25A
32-65A
L1: Required space for removal/disassembly of the coil
L2, L3, L4: Required space for replacement of the product
8.
If the product is used outdoors, place protective covers or guards above the product in order to avoid
exposure to water.
* Failure to follow this notice may cause an electric leakage.
9.
Do not apply insulation to the solenoid coil.
* Failure to follow this notice may cause the coil burn out with abnormal temperature rise, which
causes malfunction of the product.
10. When the product is used in a facility which cannot stop operating, install a bypass line with a bypass
stop valve.
*Use the bypass line while troubleshooting or disassembling the product so that the facility can keep
operating.
11. Before piping, remove foreign substances and note that seal materials must not flow into the inside
of the valve and piping.
* Foreign substances may cause valve seat leakage and malfunction.
12. When using the product under the conditions where the outlet pressure can accidentally become
higher than the inlet pressure, install a check valve at the outlet side to prevent backflow.
* Failure to follow this notice may cause backflow even during the solenoid valve is closed.
13. If the product is used in a steam line and negative pressure generates at its outlet side when it is
closed, install a vacuum breaker at the outlet side.
14. When using the product in a steam line, install a steam trap in the line.
* Failure to follow this notice may cause condensate-induced problems.
15. When the product is used in a steam line, install it in such a way that avoids condensate accumulation
at the inlet side.
* Failure to follow this notice may result in malfunction.
L1
L2,L3,L4
185
150
250
200
L1
L2,L3,L4
200
165
275
225
L1
L2,L3,L4
230
200
300
250
Caution
[mm]
[mm]
[mm]
10
■EPDT-247i■
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